# cosd

Returns the cosine of `a` (input in degrees).

## Syntax

R = cosd(a)

## Inputs

`a`- Any valid scalar | vector | matrix in degrees.

## Outputs

- R
- scalar | vector | matrix

## Example

Simple scalar cosd example:

`cosd(25)`

`R = 0.906308`

Returns the cosine of `a` (input in degrees).

R = cosd(a)

`a`- Any valid scalar | vector | matrix in degrees.

- R
- scalar | vector | matrix

Simple scalar cosd example:

`cosd(25)`

`R = 0.906308`